Deserts cover about one fifth of our planet, and are caused by extremely low rainfall over an area. Theses biomes are nonetheless home to many plants and animals which have through the course of their evolution adapted to this dry environment.

Arid, and Semi-Arid DesertArid deserts generally occur at low latitudes, and can be found in North-America, South-America, Africa, and Southern Asia.

Seasons in the arid desert are generally dry and hot, with few occurrences of rain during the winter. The heat peaks to extremes during the daytime because there are no clouds to shield the earth from the sun's rays.